Question

An element's atomic number is 77. How many protons would an atom of this element have? protons

Answer 1

Your answer is 55 protons.

Answer 2

The number of protons would be 77. i know this sounds wrong but it may be correct. i looked it up.  the atomic mass would be 192.217 atomic mass units.  the name of this is Iridium. the number of neutrons would be 115. 
hope this helps u.